IL278644B1 - A process for the stereoselective preparation of chiral 2-[(hetero)arylalkylsulfanyl]pyrimidines and products obtainable therefrom - Google Patents

A process for the stereoselective preparation of chiral 2-[(hetero)arylalkylsulfanyl]pyrimidines and products obtainable therefrom

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Publication number
IL278644B1
IL278644B1 IL278644A IL27864420A IL278644B1 IL 278644 B1 IL278644 B1 IL 278644B1 IL 278644 A IL278644 A IL 278644A IL 27864420 A IL27864420 A IL 27864420A IL 278644 B1 IL278644 B1 IL 278644B1
Authority
IL
Israel
Prior art keywords
compound
formula
optionally substituted
salt
amino
Prior art date
Application number
IL278644A
Other languages
Hebrew (he)
Other versions
IL278644A (en
IL278644B2 (en
Original Assignee
Kancera Ab
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Publication date
Application filed by Kancera Ab filed Critical Kancera Ab
Publication of IL278644A publication Critical patent/IL278644A/en
Publication of IL278644B1 publication Critical patent/IL278644B1/en
Publication of IL278644B2 publication Critical patent/IL278644B2/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D513/00Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
    • C07D513/02Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
    • C07D513/04Ortho-condensed systems
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D239/00Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
    • C07D239/46Two or more oxygen, sulphur or nitrogen atoms
    • C07D239/56One oxygen atom and one sulfur atom
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/519Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D239/00Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
    • C07D239/02Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
    • C07D239/24Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
    • C07D239/28Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
    • C07D239/46Two or more oxygen, sulphur or nitrogen atoms
    • C07D239/47One nitrogen atom and one oxygen or sulfur atom, e.g. cytosine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Claims (31)

1.Claims 1. A process for the preparation of a compound of formula I,
2.(I) or a salt thereof, wherein R represents aryl or pyridyl optionally substituted with one or more groups selected from halo, -CN, -C(O)NRR, -S(O)2R; C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, wherein the latter three groups are optionally substituted by one or more F; R represents C1-6 alkyl optionally substituted by one or more F; R and R each independently represent H or C1-6 alkyl optionally substituted by one or more F; R represents C1-6 alkyl optionally substituted by one or more F; which process comprises the steps of: (i) forming a compound of formula II,
3.(II) wherein R and R are as defined for a compound of formula I and R represents C1-6 alkyl optionally substituted by one or more F, or phenyl optionally substituted by one or more groups selected from halo, methyl and -NO2; by reacting a compound of formula III
4.(III) wherein R and R are as defined for a compound of formula I or II; with a suitable sulfonating agent in the presence of a suitable base B and a suitable solvent S, and subsequently (ii) reacting the compound of formula II, with a compound of formula IV,
5.(IV) wherein M+ represents Li+, Na+, K+ or Cs+ wherein the compound of formula III is provided as a single enantiomer. 2. A process as claimed in Claim 1, wherein the compound of formula II is not isolated from the reaction mixture from step (i) before it is used in step (ii). 3. A process as claimed in Claim 1 or Claim 2, wherein S is a solvent in which the salt formed between B and the leaving group of the sulfonating agent is insoluble. 4. A process as claimed in any one of Claims 1 to 3, wherein step (ii) comprises bringing a solution of a compound of formula II in a suitable solvent S into association with a solution of a compound of formula IV in a suitable solvent S. 5. A process as claimed in any one of Claims 1 to 4, wherein the process further comprises the step of: (iii) preparing a compound of formula IV by reacting a compound of formula V
6.(V) with a suitable base B in the presence of a suitable solvent S. 6. A process as claimed in Claim 4, wherein the solution of a compound of formula IV is obtained from step (iii), optionally after one or more purification steps.
7. A process as claimed in any one of the preceding claims, wherein S is selected from the group consisting of diethyl ether, methyl tert-butyl ether, 1,2-dimethoxyethane, 1,4-dioxane, tetrahydrofuran and 2-methyltetrahydrofuran.
8. A process as claimed in Claim 7, wherein S is methyl tert-butyl ether.
9. A process as claimed in any one of Claims 1 to 8, wherein B is an organic amine base.
10. A process as claimed in Claim 9, wherein B is triethylamine.
11. A process as claimed in any one of Claims 4 to 10, wherein S is a polar aprotic solvent.
12. A process as claimed in Claim 11, wherein S is N,N-dimethylformamide.
13. A process as claimed in any one of Claims 1 to 12, wherein B is selected from the group consisting of lithium hydroxide, lithium carbonate, sodium hydroxide, sodium carbonate, potassium hydroxide, potassium carbonate, caesium hydroxide and caesium carbonate.
14. A process as claimed in Claim 13, wherein B is sodium hydroxide.
15. A process as claimed in any one of Claims 1 to 14, wherein R represents aryl or pyridyl optionally substituted with one or more groups selected from halo, -CN, -SO2Me, or -CONH2.
16. A process as claimed in Claim 15, wherein R represents phenyl.
17. A process as claimed in any one of Claims 1 to 16, wherein R represents C1-3 alkyl.
18. A process as claimed in any one of Claims 1 to 17, wherein R represents methyl.
19. A process as claimed in any one of Claims 1 to 18, wherein the process further comprises the step of: (ib) removal of the salt formed between B and the leaving group of the sulfonating agent from the solution of a compound of formula II in S obtained from step (i).
20. A process as claimed in any one of Claims 1 to 19, further comprising the step of: (iv) treating the crude material obtained from step (ii) with a suitable solvent Sto cause precipitation of the compound of formula I.
21. A process as claimed in Claim 20, wherein S is acetonitrile.
22. A process as claimed in any one of Claims 1 to 21, wherein the sulfonating agent is mesyl chloride or tosyl chloride.
23. A process as claimed in any one of the preceding claims, wherein the process is a process for the preparation of a compound of formula Ia, or a salt thereof, (Ia) wherein R represents aryl or pyridyl, optionally substituted with one or more groups selected from halo, -CN, -C(O)NRR, -S(O)2R; C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, wherein the latter three groups are optionally substituted by one or more F, and R represents C1-6 alkyl optionally substituted by one or more F.
24. A process as claimed in Claim 23, wherein the compound of formula Ia is 6-amino-2-{[(1S)-1-phenylethyl]sulfanyl}pyrimidin-4-ol, or a salt thereof.
25. A process as claimed in claim 23 or 24, wherein the compound of formula I or Ia has a chiral purity of greater than 96%, preferably greater than 99%.
26. The compound 6-amino-2-{[(1S)-1-phenylethyl]sulfanyl}pyrimidin-4-ol, or a salt thereof, wherein the compound has a chiral purity of greater than 99.1%.
27. A process for the preparation of a compound of formula VII, or a salt thereof, (VII) wherein R represents aryl or pyridyl, optionally substituted with one or more groups selected from halo, -CN, -C(O)NRR, -S(O)2R; C1-6 alkyl, C2-6 alkenyl, C2-6 alkynyl, wherein the latter three groups are optionally substituted by one or more F, and R represents C1-6 alkyl optionally substituted by one or more F, wherein the process comprises a process as defined in any one of Claims 1 to 22.
28. A process as claimed in Claim 27, wherein the process is for the preparation of 2-[(2-amino-5-[(1-phenylethyl)thio][1,3]thiazolo[4,5-d]pyrimidin-7-yl)amino]-4-methylpentan-1-ol, or a salt thereof, .
29. A process as claimed in Claim 28, wherein the process is a process for the preparation of (2R)-2-[(2-amino-5-{[(1S)-1-phenylethyl]thio}[1,3]thiazolo[4,5-d]pyrimidin-7-yl)amino]-4-methylpentan-1-ol, or a salt thereof. .
30. A process as claimed in Claim 29, wherein the (2R)-2-[(2-amino-5-{[(1S)-1-phenylethyl]thio}[1,3]thiazolo[4,5-d]pyrimidin-7-yl)amino]-4-methylpentan-1-ol has a chiral purity of greater than 99.2%.
31. A process for the preparation of a pharmaceutical formulation comprising a compound as defined in any one of Claims 1 to 25 or 27 to 30, or a compound as claimed in Claim 26, or a salt thereof, which process is characterised in that it includes a process as defined in any one of Claims 1 to 22.
IL278644A 2018-05-15 2019-05-15 A process for the stereoselective preparation of chiral 2-[(hetero)arylalkylsulfanyl]pyrimidines and products obtainable therefrom IL278644B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1807898.0A GB201807898D0 (en) 2018-05-15 2018-05-15 New processes and products with increased chiral purity
PCT/EP2019/062530 WO2019219771A1 (en) 2018-05-15 2019-05-15 A process for the stereoselective preparation of chiral 2-[(hetero)arylalkylsulfanyl]pyrimidines and products obtainable therefrom

Publications (3)

Publication Number Publication Date
IL278644A IL278644A (en) 2021-01-31
IL278644B1 true IL278644B1 (en) 2023-11-01
IL278644B2 IL278644B2 (en) 2024-03-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
IL278644A IL278644B2 (en) 2018-05-15 2019-05-15 A process for the stereoselective preparation of chiral 2-[(hetero)arylalkylsulfanyl]pyrimidines and products obtainable therefrom

Country Status (13)

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US (3) US11542281B2 (en)
EP (1) EP3793981A1 (en)
JP (1) JP7225379B2 (en)
KR (1) KR20210014646A (en)
CN (1) CN112218853A (en)
AU (1) AU2019270348B2 (en)
CA (1) CA3099865A1 (en)
GB (1) GB201807898D0 (en)
IL (1) IL278644B2 (en)
MX (1) MX2020012108A (en)
SG (1) SG11202011317PA (en)
WO (1) WO2019219771A1 (en)
ZA (1) ZA202007101B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB202006849D0 (en) 2020-05-08 2020-06-24 Kancera Ab New use

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006107258A1 (en) * 2005-04-06 2006-10-12 Astrazeneca Ab Novel 5-substituted 7-amino-[1,3]thiazolo[4,5-d]pyrimidine derivatives

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
UA56992C2 (en) * 1995-05-08 2003-06-16 Фармація Енд Апджон Компані a- pyrimidine-thioalkyl substituted and a- pyrimidine-oxo-alkyl substituted compounds
SE9802729D0 (en) 1998-08-13 1998-08-13 Astra Pharma Prod Novel Compounds
GB0217431D0 (en) 2002-07-27 2002-09-04 Astrazeneca Ab Novel compounds
GB0221829D0 (en) * 2002-09-20 2002-10-30 Astrazeneca Ab Novel compound
GB0328243D0 (en) * 2003-12-05 2004-01-07 Astrazeneca Ab Methods
WO2006008171A1 (en) * 2004-07-22 2006-01-26 Dsm Ip Assets B.V. Process for the preparation of a diastereomerically enriched compound
HN2005000795A (en) * 2004-10-15 2010-08-19 Aventis Pharma Inc PYRIMIDINS AS ANTAGONISTS OF PROSTAGLANDINA D2 RECEPTOR
JP2013010750A (en) 2011-06-02 2013-01-17 Taisho Pharmaceutical Co Ltd Medicine containing two-pyridone compound
RU2617696C2 (en) * 2012-02-17 2017-04-26 ЭЙСАЙ Ар ЭНД Ди МЕНЕДЖМЕНТ КО., ЛТД Methods and compounds that can be used to synthesize orexin-2 receptors antagonists
JP2015231988A (en) 2014-05-12 2015-12-24 大正製薬株式会社 2- pyridone compound

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO2006107258A1 (en) * 2005-04-06 2006-10-12 Astrazeneca Ab Novel 5-substituted 7-amino-[1,3]thiazolo[4,5-d]pyrimidine derivatives

Non-Patent Citations (1)

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Title
SOFIA KARLSTR?M ET AL,, SUBSTITUTED 7-AMINO-5-THIO-THIAZOLO[4,5- D ]PYRIMIDINES AS POTENT AND SELECTIVE ANTAGONISTS OF THE FRACTALKINE RECEPTOR (CX 3 CR1), 25 April 2013 (2013-04-25) *

Also Published As

Publication number Publication date
IL278644A (en) 2021-01-31
US20230068240A1 (en) 2023-03-02
CN112218853A (en) 2021-01-12
US11542281B2 (en) 2023-01-03
ZA202007101B (en) 2023-05-31
US20210188873A1 (en) 2021-06-24
MX2020012108A (en) 2021-02-18
KR20210014646A (en) 2021-02-09
JP7225379B2 (en) 2023-02-20
GB201807898D0 (en) 2018-06-27
EP3793981A1 (en) 2021-03-24
WO2019219771A1 (en) 2019-11-21
US11691988B2 (en) 2023-07-04
US20230322807A1 (en) 2023-10-12
JP2021523950A (en) 2021-09-09
AU2019270348B2 (en) 2024-01-18
SG11202011317PA (en) 2020-12-30
CA3099865A1 (en) 2019-11-21
AU2019270348A1 (en) 2020-12-03
IL278644B2 (en) 2024-03-01

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